Finding the Fourth Proportional to 821,644.20, 1,232,466.30 and 289,765.80
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Solution
The fourth proportional to 821,644.20, 1,232,466.30 and 289,765.80 is: 434,648.70
Step by Step Solution
- Step 1: Write the proportion equation
821,644.20 : 1,232,466.30 = 289,765.80 : x - Step 2: Convert to fraction form
821,644.20/1,232,466.30 = 289,765.80/x - Step 3: Cross multiply
821,644.20x = 1,232,466.30 × 289,765.80 - Step 4: Simplify right side
821,644.20x = 357,126,583,392.54 - Step 5: Solve for x
x = 357,126,583,392.54/821,644.20 - Step 6: Final answer
x = 434,648.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.